Attenuated neutrophil respiratory burst following acute hypoglycaemia in diabetic patients and normal subjects.
The effects of insulin-induced hypoglycaemia on the neutrophil respiratory burst were investigated in six patients with type 1 diabetes and six non-diabetic control subjects. Plasma glucose reached similar nadirs in control subjects (0.9 +/- 0.1 mmol 1(-1); mean +/- SEM) and diabetic patients (1.2 +/- 0.2 mmol 1(-1)) (NS). The resting neutrophil respiratory burst was similar in control subjects (1.26 +/- 0.15 mV) and diabetic patients (1.03 +/- 0.18 mV) (NS). The neutrophil respiratory burst fell following hypoglycaemia in control subjects and diabetic patients to 0.38 +/- 0.05 mV (P < 0.001) and 0.54 +/- 0.09 mV (P < 0.05), respectively. This fall was significantly greater in control subjects (ANOVA; P < 0.001). Resting neutrophil counts were not significantly different in control subjects (3.2 +/- 0.3 x 10(9) 1(-1)) and diabetic patients (6.1 +/- 1.5 x 10(9) 1(-1)). Following hypoglycaemia, neutrophil numbers increased in control subjects and diabetic patients to 11.5 +/- 1.4 x 10(9) 1(-1) (P < 0.01) and 9.7 +/- 1.7 x 10(9) 1(-1) (P < 0.05), respectively. This increase was significantly greater in control subjects (ANOVA; P < 0.001). These results suggest that the neutrophil respiratory burst is suppressed in response to hypoglycaemia and that this phenomenon is more pronounced in non-diabetic subjects.
Thomson
G A
GA
Diabetic Clinic, Royal Alexandra Hospital, Paisley, UK.
Fisher
B M
BM
Gemmell
C G
CG
MacCuish
A C
AC
Gallacher
S J
SJ
D000208:Acute Disease; D000328:Adult; D001786:Blood Glucose / Q000032:analysis / Q000187:drug effects / Q000378:metabolism; D015331:Cohort Studies; D003922:Diabetes Mellitus, Type 1 / Q000503:physiopathology*; D006801:Humans; D007003:Hypoglycemia / Q000139:chemically induced / Q000503:physiopathology*; D007004:Hypoglycemic Agents / Q000494:pharmacology; D007328:Insulin / Q000494:pharmacology; D007958:Leukocyte Count; D008163:Luminescent Measurements; D008297:Male; D009504:Neutrophils / Q000187:drug effects / Q000502:physiology*; D012016:Reference Values; D016897:Respiratory Burst / Q000187:drug effects / Q000502:physiology*
D001786:Blood Glucose; D007004:Hypoglycemic Agents; D007328:Insulin